Sprinkler



June 25,1935. A, NETZBAND E AL 2,006,028

SPRINKLER Filed Feb. 6, 1934 v Patented June 25, 1935 UNITED STATES PATENT? oFncE Spanda Germany Application February a. 1934. Serial no. 709,978

8 Claims.

The present invention relates to rotating sprinklers and it is one of the main objects of the invention to adapt such sprinklers to a more universal use and application than has been possible heretofore.

A further object of the invention is to provide a novel sprinkler of very simple construction which can be manufactured at low costs. Another object of the invention is the provision of a sprinkler which is quiet-and uniform in its operation and which produces a perfectly atomized jet. Another and very important object of the invention is the provision of a reversing and conthe spraying of any desired sector.

Another object of the invention is to provide a. sprinkler having selective means for adjusting the same for continuous uni-directional rotation with or without material atomization of the jet or for permitting alternate movement in opposite directions over any predetermined sector under the control of said reversing mechanism. Further .objects and advantages will be seen from the specification, theclaims and the accompanying drawing, which illustrate preferred embodiments of the invention:

Fig. 1 is a side view of. a reversible sprinkler which is shown, partly in section;

Fig. 2 is a section on line AB in Fig. 1?-

Fig. 3 iliustrates a sprinkler similar to that shown in Fig. l but provided with a bame plate of particular shape.

Fig. 4 is aperspective'view ofgthe baflle plate of the sprinkler shownin Fig. 3.

Fig. 5 shows a section through the nozzle of a further embodiment similar to that shownin Figs. 1 and 3 and therefore no sideview thereof is illustrated. The section illustrated in Fig. 5 w is taken in said further embodiment on a line just like A--E indicated in Fig. 1 in connection with the embodiment shown in that figure.

Fig. 6 is a fragmentary side elevation of the discharge end of the nozzle showing the rotary element and baiiie plate and an adjustable device for controlling the vibrations of the battle plate.

with referenceto Figs. 1 foil, the nozzle l. is mounted on the front end of the neck-like memher 2 and the nozzle carries on its front end by means of ball hearings in the rotary-element h. To the rotary element It the baiile plate a is rigidly connected which provides the baille surfaces and which. is adapted to rotate around the jet. In the illustrated embodiment, the baille trolling mechanism on said sprinkler to permit Germany November 25, 1931 fined by the more or less loosening or retightening of the said connecting screws as long as the jet is ejecting. In order to permit the baflle plate to adjust itself in the most eificient situation during the operation, the baflle plate may be maderesilient; for instance a sheet metal blade may be used having due to its length the necessary resiliency desired for the purpose here in question and in connection therewith causing at the same time a vibrating driving effect as is known per se. In order to confine the range of such self-adjustment to a predetermined rate a set screw or in a special support n attached to the rotary element 72. may be arranged by the side of the banle plate.

--Into the aforesaid rotary element h which is hearing the bafile plate is screwed a stop pin e' adapted to selectively establish an operative connection between the baflle plate and the neck member 2.. so that the nozzle mechanism will perform a uni-directional rotary movement. The outer end of the said stop pin is adapted to engage on its path the cams 11 d1 of a stop disk D tiltably mounted upon said nozzle. Said diametrically arranged cams d d1 serve to reverse the rotary movement of the necklike member 2 of the sprinkler as will be hereinafter described. Said stop disk b is'also provided with a control lever c and is mounted on said nozzle at s and 51 so as to be tiltable about an axis defined by the screws s and 31. The control lever. 0' extends downwardly from the stop-disk and passes between two stops f, h on the stationary part of the sprinkler. Each of said stops is fastened in a ring member rotatably adjustable on the stand of the sprinkler.

The sprinkler operates as follows:

The water jet isuing from the nozzle impinges with its outer layers of water upon the baflle surface of the bailie plate a; thereby the outer sleeve of the Jet is atomized and the rotary element h on the other hand is set in rotation by reaction. A water spray jacket is thus produced around a core jet.v In the example illustrated,

the stop-pin e at the periphery of the rotary element will engage one of the cams d, d1, for instance the cam d thereby preventing further rotation of the element 71., while. the baille plate is then held stationary, the water reaction will be transmitted through the stop pins e and the stopdiskb to the sprinkler. Due to the relative position of the stop pin e and the cam d with respect to the heme surface, the reaction will act transversely to the axis of rotation of the rotary element and the member 2 is set in rotation until its movement is prevented or until the rotary element is again released for rotation. In the example illustrated the release is effected when the control lever strikes the stop 2. The pressure the stop I exerts on the control lever causes a tilting movement of the stop disk b on the nozzle 8; thereby the cam 'd is withdrawn from the stop pin e and the rotary surfaces now are stationary again, the water reaction will cause an opposite rotation of the sprinkler, which again will continue until the control lever c encountersv again a fixed stop provided on the stand of the sprinkler. If only one stop f is provided, the rotating movement of the sprinkler reverses always after one full revolution. In the example illustrated two spaced stops 1, ii are arranged and the said two stops aiternately cause a reversing movement, thus the angle or sector to be sprayed is determined by the space left between the two stops. The. adjustabllity of the two stops in the illustrated embodiment permits to select said sector as large as desired and to displace said sector without turning of the sprinkler. By special construction of the baille sheet, for instance such as shown in Figs.

3 and 4, it is possible to produce adjacent the jet proper a water fan, which causes spraying of a rectangular area as will be described in connection with the said Figs. 3 and c. X

From the drawing it may be seen, that even sprinklers already in use can be provided without diiflculty with a rotatable element having atomizing heme surfaces or such sprinklers may be converted into reversing sprinklers by providing thereon the reversing device herein described. 7 With reference to Figs. 3 and 4 the battle plate is provided with perforated lugs or lips u, in serving for fastening the baflie plate on the ro= tatable element. At the end of the baflle plate in opposite the afore said lugs extends a propeller surface it beyond the reaction surface propelindicated at H, and adjacent the latter a cylindrical guide surface I: is arranged.

The various surfaces cooperate in the following manner: w 1

The cylindrical guide surface I 2 forces the jet against the reaction surface proper H and in- "sures a continuous effective impact on the latter.

At the same time the water impinging the guide surface it establishes in connection with the same an inJector-like suction action and prevents the dripping of water from the nozzle mouth. .The propeller surface extending beyond the front end of the baffle surface proper strengthens the reaction eflect,, and at 'the same time produces a, special water fan extending sidewardly and rearwardly towards the sprinkler and completing thereby the'sector directly sprinkled by the same into a rectangle thus causing a uniform irrigation of "the entire surface swept by the sprinkler including the area immediately adjacent its.

stand. The steady unifornrfopration of the I aooaocs coaxial to the axis of. the jet. As long as the nozzle mouth is truly circular and the axis of rotation of the rotary member h and its associated bafile plate coincides with the axis of the jet issuing from the nozzle mouth, the impact exerted upon the heme plate by the jet will be practically uniform throughout the entire cycle of rotation of the bafiie around the jet and. in the absence of a positive connection between the rotary element It and the member 2 such as the connection efiected by the stop-pin c and cams d, d1, there will be no reaction exerted on the heck member 2 tending to rotate the'same about its axis. If, however, there is some small eccentricity between the axis of rotation of the memher it and its associated bame plate with respect to the axis of the let, for instance if the nozzle mouth is simply made unround on one side on a substantially horizontal plane as 'hodicated in Fig. ll, this unround portion or eccentricity, coupled with the intermittent shaking or vibrating bafiie plate is rotating around the jet atomizing the outer layers thereof. In this case no means for establishing an operative connection between the said ballie plate and the rotary neck member 2 are needed unless a reversing action is denred. While the mere eccentricity of. the nozzle mouth I or of the nozzle axis, would not, ofiteelf, produce thenecessary directional force to efiect the rotetion of the member 2, the successful operation of the sprinkler is based upon the conception that intermittent shaking or vibrating impulses such as those produced by the rotation of the member h. and its associated hams plate, cause a reduction of the friction in the bearing of the rotating head or nozzle mechanism sprinkler in such a manner that even the slightest torque impulses are sufllcient to cause a rotation of the entire sprinkler mechanism.

While there have been shown and described and pointed out various preferred embodiments of the invention, it will be understood that many changes in the construction and details of the novel device may be provided by those skilled in the art without departing from the spirit of. the,

sidewardly in the direction of the rotation of the rotatable element in a cylindrical guiding surface for the jet,- said baffle plate arranged to embrace and be impacted by said jet, and means for periodically transmitting the reaction from the reaction surface of the battle to the rotary noazle oi the mechanism in a direction to cause alternate rotation ofsaid rotary nozzle mechanism.

' riodically transmitting the reaction from the reaction surface of the baiile to the rotary nozzle mechanism in a direction to cause alternate rotation of said rotary nozzle mechanism.

4. In a sprinkler, a rotary nozzle mechanism through which the jet is ejected, a rotatably mounted element arranged to embrace said let, a bailie plate mounted on said rotatably mounted element and having a reaction surface arranged to embrace and be impacted by said jet to cause rotation of said rotatably mounted element, said rotatably mounted element and battle plate being mounted at the mouth of the rotary'nozzle -mechanism, and means for periodically transmitting the reaction from the reaction surface of the baiile to the rotary nozzle mechanism in adirection to cause altemate rotation of said rotary nozzle mechanism.

5. A sprinkler as specified in claim.4 having a resilient baiiie plate.

6. In a sprinkler, a rotary nozzle mechanism through which the jet is ejected, a rotatable element arranged at the mouth the nozzle and mounted on the rotary nonle mechanism. a baile plate connected to said rotatable element having a reaction surface arranged to embrace and be impacted by said jet and adapted to drive the rotatable element, and means for periodically holding said rotary element stationary with respect to said rotating nozzle mechanism to periodically transmit the reaction from the reaction surface of the baille' to the'rotary nozzle mechanism in a direction to cause alternate rotation of said rotary nozzle.

7. In a sprinkler. a rotary nozzle mechanism through which the jet is ejected, a rotatable element arranged at the mouth of the nozzle and mounted on the rotary nozzle mechanism, a bailie plate connected to said rotatable element having a reaction surface arranged to embrace and be impacted by the jet and adapted to drive the rotatable element, a stop pin projecting from said rotatab. element, a controlling means tiltably mounted on said nozzle mechanism and provided with two cams arranged in opposite positions and arranged to be brought into the path of the stop pin on the aforesaid rotatable element to arrest the same alternately in one of two opposite positions in each of which positions the reaction surface of the baflle is positioned to receive a lateral impact to eifect rotation of the nozzle mechanism in opposite direction, said cams being alternately advanced into' the path or said stop pin upon alternate tilting movements of the controlling means, and stationary stop means arranged to control the said alternate tilting movements of said controlling means.

' 8. A sprinkieras specified in claim 7, wherein said stop means arranged to control the alternate tilting movements of said controlling means comprises two stop pins arranged to engage a controlling lever connected to said tiltably mounted means, each stop pin being fastened on a ring adjustably arranged on a stationary tubular support carrying said rotary nozzle mechanism.

BRUNO KOWALSHQ 

